| 摘要 |
PURPOSE:To improve gas absorptivity on a negative electrode by forming separators in composition containing hollow fibrous glass thin fibers. CONSTITUTION:Each glass thin fiber 1 is sized about 10 mum in diameter, and its central part is penetrated by a hollow part 2 of 2 mum to 6 mum in diameter. Electrolytic solutions 3 and 3' are first absorbed and retained in the hollow parts 2 of glass thin fibers 1 for separator use by a capillary phenomenon. Because the amount of the electrolytic solutions required for a cell reaction is thus retained in the hollow parts 2 of the glass thin fibers 1, the electrolytic solutions 3 and 3' do not almost exist in gap parts 4 between the glass thin fibers 1. Namely, gas layers are formed and so the gases are easily diffused through the separators. |
